I have been using advantic floor and wall for years and love the product , so I thought I would try the zip system. I used the zip wall first and didnt like it, first of all its not the same product as advantic wall they used a different material its much softer and breaker very easy. Edgers are very soft and you must us care. All cut edges that can get wet must be taped because it will swell alot then they say to keep nails flush well with a nail gun that imposable because of the wood that your nailing to density is different as you nail some soft some a little harder. No matter how much you play with the regulator. Some go flush some to deep some sticking out. So stay with the advantic 1/2" wall not zip. Now the roof zip I thought was better than the wall but I was wrong, if you have a big roof and don't tape the seams before it rains the seams will swell. Also you have the same problem with the nailing as with the zip wall.If you have nailed it and just pierced the coating it will swell and look like you shot it to deep and have no holding left, I don't think I will be using the zip system again.